title: Intake of radioactive materials as assessed by the duplicate diet method in Fukushima.
abstract: A large quantity of radioactive materials was released from Reactor-II of the Fukushima Daiichi Nuclear Power Plant (F-1 NPP). People living in the area affected by the release are concerned about internal exposures from the daily intakes of contaminated foodstuffs. In order to assess whether the people should be concerned, Co-op Fukushima (Consumer Co-operative in Fukushima Prefecture) conducted a broad survey of radiocaesium in daily meals for which local inhabitants voluntarily provided a set of duplicate meals. Analyses by the duplicate diet method were conducted from November 2011 to March 2012 and from June 2012 to September 2012, each covering 100 families throughout the prefecture. Among the 200 meals thus analysed, 12 were found to have (134)Cs and/or (137)Cs concentrations exceeding 1 Bq kg(-1). Even with the largest radiocaesium value in our survey, daily consumption of such meals throughout a year gave an annual committed effective dose that did not exceed 0.1 mSv.
authors.affiliation: Faculty of Human Development and Culture, Fukushima University, 1 Kanayagawa, Fukushima 960-1296, Japan.
authors.forename: Osamu
authors.initials: O
authors.lastname: Sato
authors.forename: Shunkichi
authors.initials: S
authors.lastname: Nonaka
authors.forename: Jun Ichiro
authors.initials: JI
authors.lastname: Tada
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001822:Body Burden; D002588:Cesium Radioisotopes / Q000032:analysis*; D004781:Environmental Exposure / Q000032:analysis / Q000706:statistics & numerical data*; D005260:Female; D005504:Food Analysis / Q000706:statistics & numerical data*; D062406:Fukushima Nuclear Accident; D006801:Humans; D007564:Japan; D008297:Male; D008875:Middle Aged; D011197:Potassium Radioisotopes / Q000032:analysis*; D011829:Radiation Dosage; D011847:Radioactive Fallout / Q000032:analysis / Q000706:statistics & numerical data*; D014915:Whole-Body Counting / Q000706:statistics & numerical data*; D055815:Young Adult
chemical_list: D002588:Cesium Radioisotopes; D011197:Potassium Radioisotopes; D011847:Radioactive Fallout